When using a wildcard in a Copy File action, for example *.txt, the file copy is only executed up to the point where it encounters a file which already exists in the destination folder and then it quits. No further files are copied.
Using the configuration below, this Copy File action only copies files 1.txt, 2.txt and 3.txt to the destination folder.
In order to resolve the issue, an additional \ should be added to the destination path as below:
TIP: It would also be worth reviewing http://www.appsense.com/kb/150622636489954